Button spacer



FIG. 1 is a top plan view of a button spacer showing my new design;

FIG. 2 is a front elevational view thereof; the rear elevational view being a mirror image thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a right end elevational view thereof; and,

FIG. 5 is a left end elevational view thereof. 

The ornamental design for a button spacer, as shown and described. 